数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order by id desc limit 1' at line 1]
select cookies from demo_cookie where userid= order by id desc limit 1

数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1]
delete from demo_cookie where userid=

数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''VGUPOg8zUD9VI1d1BDsDbwJqAiJUZggnDCNSeQY9VztRZAR5UnQBb1AuBm0GM1Q6A3NQcAZsDidaPAR' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')